NVIDIA Mellanox MSN4800-WS4F 4U Modular Open Ethernet Chassis: This is a 4U modular Spectrum-3 based Open Ethernet switch chassis populated with 8 SN4800 line cards for a total of 128 QSFP28 100GbE ports. The unit ships with 4 hot-swap AC power supplies and P2C (Power-to-Connector) airflow. This is a modular chassis system, NOT a fixed 1U/2U pizza-box switch. This is a refurbished unit.
Engineering Context
The MSN4800-WS4F uses the NVIDIA Spectrum-3 ASIC family across modular line cards to deliver line-rate 100GbE switching across all 128 QSFP28 ports. The chassis is built for spine-class density in a single rack-and-stack unit, consolidating wiring that would otherwise require multiple top-of-rack switches. P2C airflow aligns with cold-aisle/hot-aisle conventions where the cabling face is on the cool side. Four redundant AC PSUs allow N+N power feed designs.
Deployment & Use Cases
Spine layer of leaf-spine 100GbE Ethernet fabrics in hyperscale and enterprise data centers. Aggregation tier for AI/ML clusters and GPU compute pods using ConnectX-5 and ConnectX-6 adapters. HPC interconnect aggregation. Cloud and virtualized environments running EVPN-VXLAN overlays on SONiC, Cumulus Linux, or NVIDIA Onyx (where supported via ONIE installation).
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MSN4800-WS4F
Form Factor: 4U Modular Open Ethernet Chassis
Switching ASIC: NVIDIA Spectrum-3 (across line cards)
Line Cards: 8 x MSN4800-C16 / SN4800 (16-port QSFP28 each)
Total Ports: 128 x QSFP28 100GbE
Port Speed: 100GbE per QSFP28
CPU: x86 management processor
Operating System: ONIE-bootable (e.g., SONiC, Cumulus Linux)
Airflow: P2C (Power-to-Connector)
Power Supplies: 4 x AC, hot-swap
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Constraints
Compatible with NVIDIA Mellanox QSFP28 100GbE optics, AOCs, and DACs (e.g., MMA1B00 family, MFA1A00 AOCs, MCP1600 DACs) and ConnectX adapters in 100GbE mode. NOT a turn-key OS appliance: the chassis is delivered with ONIE; a NOS image (SONiC, Cumulus, etc.) must be installed. Rail kit is NOT included unless otherwise specified. Requires AC power input matching local infrastructure. Not an InfiniBand HDR/NDR system.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS validates each chassis for line-card seating, port reachability, PSU redundancy, and thermal stability before shipment. We provide expert consultation on 100GbE Ethernet fabric design, ONIE/NOS deployment, global shipping, and a comprehensive warranty. View this product. Handling time 1–3 business days.